Essential transition metal homeostasis in plants.

Marinus Pilon (1) , Christopher M Cohu (1) , Karl Ravet (2) , Salah E Abdel-Ghany (3) , Frédéric Gaymard (2)

1 Biology department and program in molecular plant biology
2 BPMP - Biochimie et Physiologie Moléculaire des Plantes
3 Botany Department

The homeostasis of the essential transition metals copper, iron, manganese and zinc requires balanced activities of transporters that mediate import into the cell, distribution to organelles and export from the cell. Transcriptional control is important for the regulation of cellular homeostasis. In the case of Fe and Cu much progress has been made in uncovering the regulatory networks that mediate homeostasis, and key transcription factors have now been described. A master regulator of Cu homeostasis in Arabidopsis thaliana, AtSPL7, is related to the Chlamydomonas master regulator CCR1, suggesting that the key switch is conserved between the two systems even though different sets of targets are regulated in the two systems.

Mots clés: cysteine desulfurase cpnifs; chelate reductase-activity; arabidopsis-thaliana; superoxide-dismutase; iron homeostasis; transcription factor; copper homeostasis; oxidative stress; binding domain; chlamydomonas-reinhardtii

Domaines: Biologie végétale

Marinus Pilon, Christopher M Cohu, Karl Ravet, Salah E Abdel-Ghany, Frédéric Gaymard. Essential transition metal homeostasis in plants.. Current Opinion in Plant Biology, 2009, 12 (3), pp.347-57. ⟨10.1016/j.pbi.2009.04.011⟩. ⟨hal-00409329⟩